Quick questions on walls with passage attacks:
1) In general, movement through any wall with passage attacks always costs a full movement, correct?
2) I understand that a Necromancer (or other poison immune creature) moving through a Poison Gas wall is immune from the attack... but do these creatures have to use a full action to pass through it (being immune)? I don't know of any exception, but it makes sense to me that there should be one.
3) One other case: level 1 creatures and the wall of thorns... does that require a full action? Are animals special cases with this wall?
Thanks!